John Crown & Sons Ltd, was a British shipbuilding company founded in 1847 and based on the River Wear, Sunderland. History In its centenary year the shipyard was acquired by J.L. Thompson & Sons Ships built by John Crown & Sons Ltd See also List of shipbuilders and shipyards Shipbuilding companies of the City of Sunderland Defunct shipbuilding companies of the United Kingdom Former defence companies of the United Kingdom Defunct companies of England Manufacturing companies established in 1847 Manufacturing companies disestablished in 1947 1847 establishments in England 1947 disestablishments in England British companies disestablished in 1947 British companies established in 1847